Note – there are no markings on the glass, the markings have faded or rubbed-off. Sylvania 6SN7GT. Matched Pair +1.
Item Tag: Twin Triode
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Matched Pair 1956 GE Side Getter 6SN7GTB Tubes STRONG! 6SN7
Matched Pair 1956 GE Side Getter 6SN7GTB Tubes. These tubes test 84/84 and 85/85 where a new tube tests 85/85.
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6-SYLVANIA 6SN7GTB Twin Triode Chrome Top! Black Plate! HICKOK TEST GREAT!
These tubes have black plates and top halo getters with excellent silver getter flashing on each tube. The tubes have production codes as follows:6-13, 413, 322308, 626 and 552. Mutual Conductance test readings are as follows: 2300/2000, 1650/2150, 2150/1800, 2450/2600, 2350/2250 and 2350/2350.
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Matched Pair +1 RCA 6SN7GTB Staggered Black Plate Tubes Balanced STRONG 3pc 6SN7
RCA 6SN7GTB. Matched Pair +1.
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Pair 1957 GE Side Getter 6SN7GTB Tubes STRONG! 6SN7
Pair 1956 GE Side Getter 6SN7GTB Tubes. These tubes test 90/90 and 85/85 where a new tube tests 85/85.
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Matched Pair 1958 GE Side Getter 6SN7GTB Tubes STRONG! 6SN7
Matched Pair 1958 GE Side Getter 6SN7GTB Tubes. These tubes test 85/85 where a new tube tests 85/85.
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Pair RCA 6SN7GTB short glass Black Plate Tubes Balanced STRONG 6SN7
PairRCA 6SN7GTB. Black Plate Balanced Tubes. These tubes test 85/85 and 90/90where a new tube tests 85/85.
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NIB BRIMAR /Sylvania 12BH7A Short Black Plate Halo Get Tube 12BH7 Great Britain
12BH7A Short Black Plate, Halo Getter Tube. NIB BRIMAR for Sylvania. made in Great Britain.
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Pair Sylvania Black Plate Chrome Top 6SN7GTB Tubes STRONG! 6SN7
These tubes test 86/86 and 88/88 where a new tube tests 85/85.